A Marin judge delayed the arraignment of a teenage homicide suspect Tuesday after the district attorney’s office petitioned to prosecute him as an adult.

The 17-year-old Fairfax boy, who remains in custody at Marin County Juvenile Hall, was brought before the judge while his mother and the victim’s family watched from the gallery. The teen is charged in the fatal shooting of Errol Matthew Friedman, 21, last month in San Rafael.

Deputy District Attorney Cassandra Edwards filed a petition to transfer the case to adult court. Judge Beverly Wood pushed the arraignment to March 26 so the probation department could prepare its recommendations.

“I understand there is a great deal of information to process in this case,” Wood said.

The probation department must assess whether the teen is suitable for adult prosecution. It will make its finding based on several factors, including whether the teen has a prior record and the gravity and sophistication of the alleged crime.

Authorities have not released the name of the suspect because he is a minor.

Carmela Caramagno, a defense attorney assigned to the suspect’s case, declined to comment Tuesday. She had just received case materials from the prosecution.

The shooting happened at about 6 p.m. Dec. 3 at Pickleweed Park on Canal Street. San Rafael police arrived to find Friedman dead inside a vehicle.

Witnesses reported seeing a male running away shortly after the shooting. The police searched the area and could not find a shooter that night, but they identified the teen as the suspect and made the arrest two days later.

San Rafael police officials did not respond to requests Tuesday for additional information about the suspected motive for the slaying. They have not said whether Friedman and the Fairfax teen knew each another beforehand.

Friedman, whose family lives in Sleepy Hollow, graduated from Sir Francis Drake High School in 2016 and attended the University of Portland until March 2017. He was a College of Marin student when he died.